EP1042155A1 - Kugelgelenk für eine kraftfahrzeuglenkung - Google Patents

Kugelgelenk für eine kraftfahrzeuglenkung

Info

Publication number
EP1042155A1
EP1042155A1 EP98964551A EP98964551A EP1042155A1 EP 1042155 A1 EP1042155 A1 EP 1042155A1 EP 98964551 A EP98964551 A EP 98964551A EP 98964551 A EP98964551 A EP 98964551A EP 1042155 A1 EP1042155 A1 EP 1042155A1
Authority
EP
European Patent Office
Prior art keywords
ball joint
head
housing
wear
bearing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98964551A
Other languages
English (en)
French (fr)
Other versions
EP1042155B1 (de
Inventor
Jean Redele
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Scoma
Original Assignee
Scoma
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Scoma filed Critical Scoma
Publication of EP1042155A1 publication Critical patent/EP1042155A1/de
Application granted granted Critical
Publication of EP1042155B1 publication Critical patent/EP1042155B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
    • F16C11/0619—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints the female part comprising a blind socket receiving the male part
    • F16C11/0623—Construction or details of the socket member
    • F16C11/0647—Special features relating to adjustment for wear or play; Wear indicators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D7/00—Steering linkage; Stub axles or their mountings
    • B62D7/16—Arrangement of linkage connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
    • F16C11/0619—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints the female part comprising a blind socket receiving the male part
    • F16C11/0623—Construction or details of the socket member
    • F16C11/0628—Construction or details of the socket member with linings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/12—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load
    • F16C17/24—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load with devices affected by abnormal or undesired positions, e.g. for preventing overheating, for safety
    • F16C17/246—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load with devices affected by abnormal or undesired positions, e.g. for preventing overheating, for safety related to wear, e.g. sensors for measuring wear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/20—Land vehicles
    • F16C2326/24—Steering systems, e.g. steering rods or columns
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/20—Joints and connections with indicator or inspection means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32606—Pivoted
    • Y10T403/32631—Universal ball and socket
    • Y10T403/32737—Universal ball and socket including liner, shim, or discrete seat
    • Y10T403/32762—Spring-biased seat opposite ball stud

Definitions

  • the present invention relates to a ball joint, in particular for a motor vehicle steering system.
  • motor vehicle is meant here as well a car, a truck, a tractor or any industrial vehicle such as a work machine.
  • the ball joint of the present invention finds widespread use in this application, it will be understood that it is not beyond the scope of the invention to use such a ball joint in other applications.
  • Document GB-1 336 087 describes a ball joint, the upper bearing of which comprises a grease nipple in the form of a socket 38 which projects out of the ball joint housing.
  • This bearing is urged elastically against the head of the patella by a compressed elastomer ring.
  • This ring is supported on the one hand on the movable upper pad and on the other hand on a fixed cover 28.
  • This cover is pierced with a hole 40 through which the bush 38 of the pad protrudes.
  • the bushing sinks into the hole, which gives an indication of wear on the head and / or lower pad.
  • the present invention aims to overcome this drawback of the prior art by defining a ball joint of modern design for which it is very easy to determine if it can still fulfill its use.
  • the invention provides a ball joint, in particular for a motor vehicle steering system, of the type comprising a housing, a ball joint engaged inside the housing, formed of a spherical head integral with a rod emerging through an opening of the housing, a lower bearing defining a lower bearing surrounding the head of the ball joint on the side of the opening of the housing and an opposite movable upper bearing defining an upper bearing, said upper bearing being biased by a spring against the head of the ball joint, so as to be able to move towards the lower pad as the lower pad wears out, said articulation comprising means indicating the wear of the lower pad adapted to give an indication of the wear of said pad, the wear indicator means comprising a contact element adapted to come into contact with the head of the has a ball loaded by the spring.
  • the indicator means give an electrical indication that can be viewed in the form of an indicator light.
  • the indicator means give a discrete visual indication representative of an acceptable wear limit value.
  • the indicator means give a continuous visual indication representative of the progressive wear of the head.
  • the contact element is integral with an electrically conductive part adapted to establish an electrical contact after said contact element is biased by the head or by the upper pad.
  • FIG. 1 is a section view on the left half and in perspective on the right half of a ball joint according to one embodiment of the invention, the ball joint being in new condition
  • - Figure 2 is a view of the ball joint of Figure 1 in an advanced state of wear
  • Figure 3 is a cross-sectional view of a wear indicator means used in the present invention
  • Figure 4 is a cross-sectional view of a second wear indicator means used in the present invention
  • Figure 5 is a cross-sectional view of a third embodiment of a wear indicator used in the present invention
  • Figure 6 is a sectional view of a ball joint according to a second embodiment of the invention.
  • the ball joint of Figure 1 is a new joint, the head 20 being perfectly spherical.
  • the upper cushion 24 is pushed by the spherical head 20 against the plug 6.
  • the spring 5 does not yet perform any function in this state.
  • the spring 5 pushes the pad 24 still in contact with the head, and it can be seen that the pad 24 moves downwards by a height h .
  • This displacement height of the upper pad 24 is directly representative of the state of wear of the head 20 of the ball joint.
  • this state of wear of the head 20 of the ball joint is detected by means of a wear indicator device designated as a whole by the reference numeral 7.
  • the wear indicator device 7 is disposed on the housing 1 of the articulation at a level situated substantially between the upper bearing 24 and the lower bearing 3.
  • a housing 81 for example threaded, has been provided in the wall of the housing 1 so as to communicate the interior and the exterior of the housing.
  • the wear indicator device 7 is therefore simply screwed into this housing 81.
  • FIG. 3 which shows an enlarged view of the wear indicator device shown in FIGS.
  • the device comprises a substantially cylindrical body 70 which defines a threaded portion 76 intended to come into engagement with the internal thread of the housing 81 produced in the housing 1.
  • the wear indicator device 7 comprises a contact element 71 in the form of a rod which in the mounted state extends below the upper pad 24 as can be seen in FIG. 1.
  • the contact rod 71 is made of a non-conductive material but is received in a sleeve 72 made of a conductive material .
  • the sleeve 72 is held in the body 70 by an insulation and holding ring 74 made of a flexible material.
  • the wear indicator device 7 which has just been described therefore indicates that the spherical head 20 of the ball joint has reached an acceptable wear limit value. This value was not detected directly but deduced from a parameter directly related to the state of wear, in this case the translational displacement of the upper pad 24 which serves as a play take-up device.
  • the location of the structure of the wear indicator device 7 which has just been described should not be considered as being the only possible. Indeed, it is entirely conceivable to use other types of wear indicators that are available in other places of the ball joint. For example, it is possible to provide a window in the plug 6 to observe the movement of the pad 24 relative to a graduated scale. Other embodiments of a wear indicator device are shown in Figures 4 and 5 and can be used to replace the device shown in Figures 1, 2 and 3.
  • the wear indicator device is a device which gives a visual and continuous indication of the progressive wear of the spherical head as a function of the displacement of the pad 24.
  • the device 7 ' comprises a body 70 also provided with a threaded portion 76 'intended to come into threaded engagement in the housing 81 of the housing 1.
  • the body 70 internally defines a cylindrical sliding passage in which is engaged a contact element 71' which can freely slide inside.
  • the end of the rod 71 'which penetrates inside the housing is provided with an inclined cam surface 72' intended to come into contact with the lower part of the upper bushing 24.
  • the wear indicator device 7 is a visual and electrical indicator device at the same time.
  • this device 7 is also provided with a coips 70 "similar to that of the device 7 and 7 'and therefore comprises an externally threaded part 76 ".
  • the body 70 ′ directed towards the inside of the housing 1, the body forms a rupture end piece 71 ′′ intended to be broken by the cushion 24 during its movement downwards in the direction of its lower cushion 3.
  • This ball joint end 71 is secured in the initial state to a rod 72" biased outwards, that is to say away from the breaking end 71 ", by a spring 73".
  • the rod 72 " is provided with a stop ring 74" intended to come into abutment after rupture of the rupture end piece 71 ", against a stop ring 75" formed the body 70 ".
  • the rod 72 " At its free end facing outwards, the rod 72 "has a pin 78" visible from the outside.
  • the rod 72" is pushed by the spring 73 "until its stop ring 74" comes into contact with the stop element 75 "
  • the contact of these last two elements establishes an electrical contact such as that of the device 7 of FIG. 3 which can, for example, light an indicator light located on the dashboard of the vehicle.
  • it is directly visible by observing the state of progress of the pin 78 'if the rupture tip 71' is still in place or not.
  • This wear indicator device therefore gives an indication that is both visual and electronic.
  • the particular type of wear indicator device does not limit the scope of the invention. It suffices that the indicator gives an indication of the state of wear of the spherical head 20 of the ball joint, which is made more easily possible by the measurement of a directly dependent parameter such as the displacement of the upper bearing 24.
  • FIG. 6 there is shown a hinge according to a second embodiment.
  • the contact element is therefore here adapted to come into contact with the head 20 of the ball joint as the lower pad wears.
  • this second embodiment is particularly suitable for joints subject to wear of the lower pad, but not exclusively.
  • the head of the ball joint can also be subject to wear.
  • the contact element must be placed below the maximum diameter of the head so that the latter can come into contact with the contact element, the type of indicator used can be those of FIGS. 3 to 5 or others.
EP98964551A 1997-12-31 1998-12-30 Kugelgelenk für eine kraftfahrzeuglenkung Expired - Lifetime EP1042155B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9716769A FR2773131B1 (fr) 1997-12-31 1997-12-31 Articulation a rotule pour direction de vehicule automobile
FR9716769 1997-12-31
PCT/FR1998/002915 WO1999035020A1 (fr) 1997-12-31 1998-12-30 Articulation a rotule pour direction de vehicule automobile

Publications (2)

Publication Number Publication Date
EP1042155A1 true EP1042155A1 (de) 2000-10-11
EP1042155B1 EP1042155B1 (de) 2002-03-27

Family

ID=9515356

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98964551A Expired - Lifetime EP1042155B1 (de) 1997-12-31 1998-12-30 Kugelgelenk für eine kraftfahrzeuglenkung

Country Status (9)

Country Link
US (1) US6533491B1 (de)
EP (1) EP1042155B1 (de)
AT (1) ATE215036T1 (de)
DE (1) DE69804504T2 (de)
ES (1) ES2175843T3 (de)
FR (1) FR2773131B1 (de)
PT (1) PT1042155E (de)
TR (1) TR200001882T2 (de)
WO (1) WO1999035020A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003019022A1 (de) * 2001-08-24 2003-03-06 ZF Lemförder Metallwaren AG Kugelgelenk

Families Citing this family (15)

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Publication number Priority date Publication date Assignee Title
FR2833321B1 (fr) * 2001-12-11 2006-05-26 Irisbus France Liaison a rotule pour organe de vehicule routier, et organe de vehicule routier equipe d'une telle liaison
US7048461B2 (en) * 2002-09-20 2006-05-23 Trw Inc. Ball joint assembly with wear indication
US20060029461A1 (en) * 2004-08-05 2006-02-09 Trw Automotive U.S. Llc Ball joint assembly with wear indicating electrical circuit
DE102004039781B4 (de) * 2004-08-16 2007-03-29 Zf Friedrichshafen Ag Kugelgelenk für ein Kraftfahrzeug
US7644500B2 (en) * 2006-01-17 2010-01-12 Federal-Mogul World Wide, Inc. Method of setting the pre-load for a ball socket joint
WO2008055918A2 (en) * 2006-11-08 2008-05-15 Abb Ab A joint for industrial robots
DE102010005134A1 (de) * 2010-01-19 2011-07-21 TRW Automotive GmbH, 73553 Kugelgelenk
US8714571B2 (en) * 2010-03-16 2014-05-06 Automann Inc. Torque rod
KR101252066B1 (ko) * 2011-07-08 2013-04-12 (주) 에스문 볼힌지 구조
DE102011111842B4 (de) 2011-08-27 2013-04-04 Audi Ag Kugelgelenk
DE102012019043A1 (de) 2012-09-27 2014-03-27 Trw Automotive Gmbh Kugelgelenk und Verfahren zur Herstellung eines Kugelgelenks
RU2515001C1 (ru) * 2012-10-03 2014-05-10 Федеральное государственное унитарное предприятие "Государственный космический научно-производственный центр имени М.В. Хруничева" Регулирующий узел
CN105114453B (zh) * 2015-07-28 2018-02-09 中车南京浦镇车辆有限公司 一种带磨耗标记的万向节轴承
US10935476B2 (en) 2018-04-30 2021-03-02 Ford Global Technologies, Llc Ball joint sensor
DE102019204659A1 (de) * 2019-04-02 2020-10-08 Zf Friedrichshafen Ag Kugelgelenk für ein Fahrwerk eines Fahrzeugs und Verfahren zum Herstellen eines solchen Kugelgelenks

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US3791748A (en) * 1972-04-17 1974-02-12 Dart Ind Inc Ball joint with manually operable, sensible wear indicator
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FR2560140B1 (fr) * 1984-02-28 1991-09-13 Redele Jean Embout a rotule pour direction de vehicule automobile
JPS6127305A (ja) * 1984-07-19 1986-02-06 Musashi Seimitsu Kogyo Kk 摩耗表示ボ−ルジヨイント
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003019022A1 (de) * 2001-08-24 2003-03-06 ZF Lemförder Metallwaren AG Kugelgelenk
US7367742B2 (en) 2001-08-24 2008-05-06 ZF Lemförder Metallwaren AG Ball and socket joint

Also Published As

Publication number Publication date
ES2175843T3 (es) 2002-11-16
US6533491B1 (en) 2003-03-18
FR2773131A1 (fr) 1999-07-02
DE69804504D1 (de) 2002-05-02
DE69804504T2 (de) 2002-11-21
ATE215036T1 (de) 2002-04-15
PT1042155E (pt) 2002-09-30
WO1999035020A1 (fr) 1999-07-15
EP1042155B1 (de) 2002-03-27
TR200001882T2 (tr) 2001-05-21
FR2773131B1 (fr) 2000-03-24

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